Neusticurus medemi Dixon & Lamar, 1981

Distribution: In the Amazonian region of Colombia and Venezuela. In Colombia in the eastern of Caquetá department, Guaviare, Vaupés and likely Guainía (Fig. 4C).

Similar species: This species may be confused with Gelanesaurus spp. and Potamites ecpleopus for their external resemblance, being distinguishable in having small irregular scales not forming ridges (enlarged or tubercular dorsal scales forming longitudinal ridges in Gelanesaurus spp. and P. ecpleopus).